<script setup>
import { Edit, Delete } from "@element-plus/icons-vue";

import { ref } from "vue";

//文章分类数据模型
const categorys = ref([]);

//用户搜索时选中的分类id
const categoryId = ref("");

//用户搜索时选中的发布状态
const state = ref("");

//文章列表数据模型
const articles = ref([]);

//分页条数据模型
const pageNum = ref(1); //当前页
const total = ref(20); //总条数
const pageSize = ref(3); //每页条数

//当每页条数发生了变化，调用此函数
const onSizeChange = (size) => {
  pageSize.value = size;
  articleList();
};
//当前页码发生变化，调用此函数
const onCurrentChange = (num) => {
  pageNum.value = num;
  articleList();
};

//文章分类回显
import {
  articleCategoryService,
  articleListService,
  articleAddService,
  articleUpdataService,
  articleDeleteService,
} from "@/api/article.js";
const articleCategoryList = async () => {
  let result = await articleCategoryService();

  categorys.value = result.data;
};

//获取文章列表
const articleList = async () => {
  let params = {
    pageNum: pageNum.value,
    pageSize: pageSize.value,
    categoryId: categoryId.value ? categoryId.value : null,
    state: state.value ? state.value : null,
  };
  let result = await articleListService(params);

  total.value = result.data.total;
  articles.value = result.data.items;

  //处理分类名称
  for (let index = 0; index < articles.value.length; index++) {
    let article = articles.value[index];
    for (let i = 0; i < categorys.value.length; i++) {
      if (article.categoryId == categorys.value[i].id) {
        article.categoryName = categorys.value[i].categoryName;
      }
    }
  }
};

articleCategoryList();

articleList();

import { QuillEditor } from "@vueup/vue-quill";
import "@vueup/vue-quill/dist/vue-quill.snow.css";
import { Plus } from "@element-plus/icons-vue";
//控制抽屉是否显示
const visibleDrawer = ref(false);
//添加表单数据模型
const articleModel = ref({
  title: "",
  categoryId: "",
  coverImg: "",
  content: "",
  state: "",
});

//导入token
import { useTokenStore } from "@/stores/token.js";
const tokenStore = useTokenStore();

//上传成功回调函数
const uploadSuccess = (result) => {
  articleModel.value.coverImg = result.data;
  // console.log(result.data);
};

//添加文章
import { ElMessage } from "element-plus";
const addArtcile = async (clickState) => {
  articleModel.value.state = clickState;
  let result = await articleAddService(articleModel.value);

  ElMessage.success(result.msg ? result.msg : "添加成功");

  //关闭页面
  visibleDrawer.value = false;
  //刷新页面
  articleList();
};

//定义变量,控制标题的展示
const title = ref("");

//展示编辑弹窗
const showDialog = (row) => {
  visibleDrawer.value = true;
  title.value = "编辑文章";
  //数据拷贝
  articleModel.value.title = row.title;
  articleModel.value.categoryId = row.categoryId;
  articleModel.value.coverImg = row.coverImg;
  articleModel.value.content = row.content;
  articleModel.value.state = row.state;
  //扩展id属性,将来需要传递给后台,完成修改
  articleModel.value.id = row.id;
};

const clearData = () => {
  articleModel.value.title = "";
  articleModel.value.categoryId = "";
  articleModel.value.coverImg = "";
  articleModel.value.content = "";
  articleModel.value.state = "";
};

//修改文章
const updataArtcile = async (clickState) => {
  articleModel.value.state = clickState;
  let result = await articleUpdataService(articleModel.value);

  ElMessage.success(result.msg ? result.msg : "修改成功");

  //关闭页面
  visibleDrawer.value = false;
  //刷新页面
  articleList();
};

//删除文章
import { ElMessageBox } from "element-plus";
const deleteArticle = (row) => {
  //提示用户  确认框
  ElMessageBox.confirm("你确认要删除该文章信息吗?", "温馨提示", {
    confirmButtonText: "确认",
    cancelButtonText: "取消",
    type: "warning",
  })
    .then(async () => {
      //调用接口
      let result = await articleDeleteService(row.id);
      ElMessage({
        type: "success",
        message: "删除成功",
      });
      //刷新列表
      articleList();
    })
    .catch(() => {
      ElMessage({
        type: "info",
        message: "用户取消了删除",
      });
    });
};
</script>
<template>
  <el-card class="page-container">
    <template #header>
      <div class="header">
        <span>文章管理</span>
        <div class="extra">
          <el-button type="primary" @click="
            visibleDrawer = true;
          title = '添加文章';
          clearData();
          ">添加文章</el-button>
        </div>
      </div>
    </template>
    <!-- 搜索表单 -->
    <el-form inline>
      <el-form-item label="文章分类：">
        <el-select placeholder="请选择" v-model="categoryId" style="width: 200px">
          <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
          </el-option>
        </el-select>
      </el-form-item>

      <el-form-item label="发布状态：">
        <el-select placeholder="请选择" v-model="state" style="width: 200px">
          <el-option label="已发布" value="已发布"></el-option>
          <el-option label="草稿" value="草稿"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="articleList">搜索</el-button>
        <el-button @click="
          categoryId = '';
        state = '';
        ">重置</el-button>
      </el-form-item>
    </el-form>
    <!-- 文章列表 -->
    <el-table :data="articles" style="width: 100%">
      <el-table-column label="文章标题" width="400" prop="title"></el-table-column>
      <el-table-column label="分类" prop="categoryName"></el-table-column>
      <el-table-column label="发表时间" prop="createTime"> </el-table-column>
      <el-table-column label="状态" prop="state"></el-table-column>
      <el-table-column label="操作" width="100">
        <template #default="{ row }">
          <el-button :icon="Edit" circle plain type="primary" @click="showDialog(row)"></el-button>
          <el-button :icon="Delete" circle plain type="danger" @click="deleteArticle(row)"></el-button>
        </template>
      </el-table-column>
      <template #empty>
        <el-empty description="没有数据" />
      </template>
    </el-table>
    <!-- 分页条 -->
    <el-pagination v-model:current-page="pageNum" v-model:page-size="pageSize" :page-sizes="[3, 5, 10, 15]"
      layout="jumper, total, sizes, prev, pager, next" background :total="total" @size-change="onSizeChange"
      @current-change="onCurrentChange" style="margin-top: 20px; justify-content: flex-end" />

    <!-- 抽屉 -->
    <el-drawer v-model="visibleDrawer" :title="title" direction="rtl" size="50%">
      <!-- 添加文章表单 -->
      <el-form :model="articleModel" label-width="100px">
        <el-form-item label="文章标题">
          <el-input v-model="articleModel.title" placeholder="请输入标题"></el-input>
        </el-form-item>
        <el-form-item label="文章分类">
          <el-select placeholder="请选择" v-model="articleModel.categoryId">
            <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="文章封面">
          <el-upload class="avatar-uploader" :auto-upload="true" :show-file-list="false" action="/api/upload"
            name="file" :headers="{ Authorization: tokenStore.token }" :on-success="uploadSuccess">
            <img v-if="articleModel.coverImg" :src="articleModel.coverImg" class="avatar" />
            <el-icon v-else class="avatar-uploader-icon">
              <Plus />
            </el-icon>
          </el-upload>
        </el-form-item>
        <el-form-item label="文章内容">
          <div class="editor">
            <quill-editor theme="snow" v-model:content="articleModel.content" contentType="html">
            </quill-editor>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="title == '添加文章' ? addArtcile('已发布') : updataArtcile('已发布')">发布</el-button>
          <el-button type="info" @click="title == '添加文章' ? addArtcile('草稿') : updataArtcile('草稿')">草稿</el-button>
        </el-form-item>
      </el-form>
    </el-drawer>
  </el-card>
</template>
<style lang="scss" scoped>
.page-container {
  min-height: 100%;
  box-sizing: border-box;

  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}

/* 抽屉样式 */
.avatar-uploader {
  :deep() {
    .avatar {
      width: 178px;
      height: 178px;
      display: block;
    }

    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }

    .el-upload:hover {
      border-color: var(--el-color-primary);
    }

    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 178px;
      height: 178px;
      text-align: center;
    }
  }
}

.editor {
  width: 100%;

  :deep(.ql-editor) {
    min-height: 200px;
  }
}
</style>
